OMG thanks to you! That thing was driving me crazy.
Thank you. I've been wanting to solve this for weeks now!
Thank you so much! Your answer fixed my problem.
I've been trying to fix this for hours! You are a savior!
I've been searching for 30 minutes then I found your answer.
Other:

This is NOT abusive. I pressed this button by accident.It is spam / self promotion.It is offensive or harmful.It does not contain enough information.It contains or requests illegal information.It does not make sense.

The cost depends as per your data plan.So,you need to contact your customer service and get the tariff.If you are out of your service coverage area (roaming) you will charged more and hence switching to the local sim when you visit any country is advisable.To do this your phone should be an unlocked one.If it is locked with any particular network it will not accept/recognize other networks. To unlock you can approach http://www.unbblock.com/blackberry/rs18wp8/ (especially for blackberry mobile models) or http://www.simpleunlocking.com/supported-phones/rs16wp7/ to get permanent unlocking service.Once unlocked you can switch sim cards.Other ways to avoid high calling cost are choosing an economic data plan,when we are in roaming we can opt for W-Fi,rent a local mobile etc.

We need your help! Please help us improve our content by removing questions that are essentially the same and merging them into this question. Please tell us which questions below are the same as this one:

What dialling code do i need to phone a mobile phone in usa from england?

The following questions have been merged into this one. If you feel any of these questions have been included in error help us improve our content by splitting these questions into seperate discussions. Please unmerge any questions that are not the same as this one:

What dialling code do i need to phone a mobile phone in usa from england?